Second try to move crc routines to libwsutil.

This time keep the tvb routines in epan.

Now we can use common crc routines outside epan.

svn path=/trunk/; revision=38810

1 files changed, 50 insertions, 0 deletions

diff --git a/epan/crc8-tvb.h b/epan/crc8-tvb.h
new file mode 100644
index 0000000000..cb4775c17c
--- /dev/null
+++ b/epan/crc8-tvb.h
@@ -0,0 +1,50 @@
+/* crc8.h
+ *
+ * Checks the checksum (FCS) of the 3G TS 27.010 Multiplexing protocol.
+ * The algorithm to check the FCS is described in "3G TS 27.010 V2.0.0 (1999-06)"
+ * See: www.3gpp.org/ftp/tsg_t/TSG_T/TSGT_04/docs/PDFs/TP-99119.pdf
+ * or: http://www.3gpp.org/ftp/Specs/html-info/27010.htm
+ *
+ * Polynom: (x^8 + x^2 + x^1 + 1)
+ *
+ * 2011 Hans-Christoph Schemmel <hans-christoph.schemmel[AT]cinterion.com>
+ *
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+
+/**
+ * Check the final crc value(Receiver code)
+ *
+ * \param p The tv buffer containing the data.
+ * \param len Number of bytes in the message.
+ * \param offset Offset in the message.
+ * \param received_fcs The received FCS.
+ * \return     Returns TRUE if the checksum is correct, FALSE if it is not correct
+ *****************************************************************************/
+
+#ifndef __CRC8_TVB_H__
+#define __CRC8_TVB_H__
+
+extern gboolean check_fcs(tvbuff_t *p, guint8 len, guint8 offset, guint8 received_fcs);
+
+#endif /* __CRC8_TVB_H__ */